MediaTek MT7681 is a compact Wi-Fi System-on-Chip (SoC) for IoT devices with embedded TCP/IP stack. By adding the MT7681 to an IoT device, it can connect to other smart devices or to cloud applications and services. Connectivity on the MT7681 is achieved using Wi-Fi in either Wi-Fi station or access point (AP) mode. Visit the overview page to compare different smart home chipsets.

Key features

  • Wi-Fi Station mode: 802.11b/g/n

  • Wi-Fi Access Point mode: 802.11b/g

  • Smart connection APIs to easily create Android or iOS apps to provision a device with wireless AP settings

  • TCP/IP stack

  • Firmware upgrade over UART, APIs for FOTA (firmware over the air) implementation

  • Software PWM emulation for LED dimming

In Wi-Fi station mode, MT7681 connects to a wireless AP and can then communicate with web services or cloud servers. A typical use of this option would be to enable a user to control the heating in their home from a home automation website.

MT7681 chipset block diagram
Processor core Andes N9
Clock 80MHz
Package 5mm x 5mm QFN40L
Wi-Fi Station Mode 802.11b/g/n
Wi-Fi Access Point Mode 802.11b/g
Operation Voltage 3.3V
Peripherals SPI, UART, PWM, GPIO

LinkIt Connect 7681

The LinkIt Connect 7681 development board, co-designed with Seeed Studio, provides you with easy access to the five GPIO pins and one UART port — each with an LED — of the MediaTek MT7681 chip, to quickly connect peripheral controllers and electronic circuits. The MediaTek MT7681 — compact Wi-Fi SoC with embedded TCP/IP stack — is provided on the LinkIt Connect 7681 module, co-designed with AcSiP.